Melanocyte wani nau'i ne na kwayar halitta wanda ke da farko a cikin basal Layer na epidermis . Melanocytes samar da melanin, alamar launin ruwan kasa wanda ke da alhakin launin fata kuma yana karewa daga illa mai haske na UV. Melanocytes ma suna cikin gashi kuma a cikin idon idanu.
Kayan Melanocytes
Melanocytes ci gaba a cikin ƙananan ƙwayoyin halitta: ƙungiyar ta wucin gadi na kwayoyin halitta da ke dauke da kwayoyin halitta wanda aka cire a matsayin ƙananan tube - ko ƙananan ƙwayoyi.
A lokacin kwanyar jima'i na rayuwa, melanocytes suna motsawa daga neural crest zuwa basal Layer na epidermis. Melanocytes sune siffar reshe, wanda ya ba su damar canja wurin melanin zuwa wasu fata, kamar keratinocytes . Keratinocytes ne mafi yawan fata Kwayoyin da ƙarfafa gashi, kusoshi, da fata.
Production
Melanocytes samar da melanin, wanda aka saka a cikin Epidermal Kwayoyin. Akwai nau'o'in melanin guda biyu wadanda melanocytes suke samarwa: eumelanin, wanda shine launin ruwan kasa mai launi, da phaeomelanin, wanda zai iya samun launin jan ko launin rawaya.
Yadda ake amfani da melanin an tsara shi ne ta wani hormone peptide wanda ke cikin gland shine kuma an san shi azaman hormone mai malanocyte. Ciwon daji na Pituitary da kuma kwayoyin yadarin estrogen wadanda ke faruwa a yayin haifuwa haifar da gland shine ta haifar da karin wannan hormone.
Amma melanocytes ba kullum aiki kamar yadda ya kamata. Vitiligo, alal misali, wani nau'in fata ne wanda ba'a samar da melanin, wanda ya haifar da fararen fata, fata mai launin fata wanda ya kara girma.
Rashin ciwon melanin kuma ya juya gashi a cikin yankunan da aka shafa. Sauran yanayi waɗanda rashin rashin ciwon melanin ya shafi sun hada da albinism da phenylketonuria.
Muhimmin Melanin
Launi na fata mutum ya bambanta. Tsararren asalinta yana ƙaddara ta jini wanda ke gudana ta wurinsa, abinci, da kuma melanin da melanocytes ya samar.
Mutane suna da daidai adadin melanocytes; yawan adadin melanin da wadanda melanocytes suka samar, duk da haka, abin da ya bambanta.
Melanin yana kare fata ta hanyar kare shi daga rana. Lokacin da fatar jiki ya fallasa rana, aikin samar da melanin ya ƙaru, wanda shine abin da ke samar da tan. Sashin jikin kare jiki ne akan kunar kunar rana.
Lokaci a Sun ya zo da farashi
Kowane mutum ya fi dacewa da haske, amma ya zo a farashi. Kudin kashewa yana da yawa a rana (ko a cikin gadon tanning) yana da haɗari. Ɗauki kunar rana a jiki, alal misali. Yana daukan lokaci don melanocytes su samar da melanin da kare kullun daga hasken rana. Lokacin da melanocytes ba zasu iya aiki da sauri don ƙirƙirar tan ba, hasken UV daga rana zai iya ƙone fata kuma ya bar shi yana neman ruwan hoda ko haske mai ja. Rashin lalacewar sun kuma samuwa a tsawon lokaci, wanda zai haifar da ciwon daji. Rashin jikinka, ya fi girma ga hadarin bunkasa ciwon fata. Saboda haka ka tabbata cewa kayi ganin likitan ɗan adam a kowane lokaci don gwajin fata.
Hasken rana kai tsaye ba kome ba ne, duk da haka. Fatar jiki yana amfani da hasken rana don yin bitamin D, wanda ke shafe allura kuma yana da muhimmanci ga ƙarfin ƙarfi da girma.